This is a discussion on Unstable sftp connection caused by wrong sshd_config setting? - openssh ; We are experiencing unstable sftp connection to SUN solaris 8 server
running OpenSSH_4.3p2, OpenSSL 0.9.8a 11 Oct 2005 when using sftp client
made from jscape.ssh.dll. Interactively using filezilla (sftp SSH2) or
putty we can connect to server1 fine and in ...

Unstable sftp connection caused by wrong sshd_config setting?

We are experiencing unstable sftp connection to SUN solaris 8 server
running OpenSSH_4.3p2, OpenSSL 0.9.8a 11 Oct 2005 when using sftp client
made from jscape.ssh.dll. Interactively using filezilla (sftp SSH2) or
putty we can connect to server1 fine and in multiple times.

From sshd log below, we can see server suddenly closes connection while
during the key exchange. Is there any setting in sshd_config to prevent
server suddenly closes connection? I included sshd serverlog,
sshd_config and debuglog from the client side. Thankyou in advance for
any insights and help.

# This is the sshd server system-wide configuration file. See
# sshd_config(5) for more information.

# This sshd was compiled with
PATH=3D/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin

# The strategy used for options in the default sshd_config shipped with
# OpenSSH is to specify options with their default value where
# possible, but leave them commented. Uncommented options change a
# default value.

# For this to work you will also need host keys in
/usr/local/etc/ssh_known_hosts
#RhostsRSAAuthentication no
# similar for protocol version 2
#HostbasedAuthentication no
# Change to yes if you don't trust ~/.ssh/known_hosts for
# RhostsRSAAuthentication and HostbasedAuthentication
#IgnoreUserKnownHosts no
# Don't read the user's ~/.rhosts and ~/.shosts files
#IgnoreRhosts yes

# Set this to 'yes' to enable PAM authentication, account processing,
# and session processing. If this is enabled, PAM authentication will
# be allowed through the ChallengeResponseAuthentication mechanism.
# Depending on your PAM configuration, this may bypass the setting of
# PasswordAuthentication, PermitEmptyPasswords, and
# "PermitRootLogin without-password". If you just want the PAM account
and
# session checks to run without PAM authentication, then enable this but
set
# ChallengeResponseAuthentication=3Dno
ChallengeResponseAuthentication=3Dyes
#UsePAM no
UsePAM yes

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